2
Safety
Technology
& Innovation
Note: The items listed under “Electrical connection” must be observed during commissioning.
Commissioning
Procedure
1. Wiring SR105E :
Wire the SR105E with the OMRON STI basic device ac-
cording to your application (see Fig. 1 to Fig. 2).
2. Wiring basic device:
Wire the basic device according to the required Perform-
ance Level determined (see user information for the basic
device).
3. Wiring feedback loop:
Wire the feedback loop as shown in Fig. 3 and Fig. 4.
4. Wiring power supply:
Connect the power supply to terminals A1 and A2 (Fig. 5).
Warning: Wiring only in de-energized state.
5. Starting the device:
Switch the operating voltage on.
Warning:
If the “Automatic start” starting behavior is set on the basic
device, the safety contacts will close immediately.
If the “Monitored manual start” starting behavior is set, close
the start button on the basic device to close the safety
contacts.
The LEDs K1 and K2 on the basic device and on the
SR105E are lit.
6. Triggering safety function:
Open the emergency stop circuit by actuating the con-
nected safety switch. The safety contacts of the basic de-
vice and the SR105E open immediately.
7. Reactivation:
Close the emergency stop circuit. If “Automatic start” is
selected on the basic device, the safety contacts will close
immediately.
If the “Monitored manual start” starting behavior is set, close
the start button on the basic device to close the safety
contacts of the basic device and the SR105E.
Depending on the application, the device must be wired with a ORMON STI basic device as shown in Fig. 1 to Fig. 2. If the
devices are wired inside a control cabinet (minimum degree of protection IP54), the fault involving a short circuit between the
activation lines can be ruled out (protected wiring space). Category 4, PL e according to EN ISO 13849-1 is thereby possible.
If this fault cannot be ruled out, category 3, PL e is achieved.
Applications
Fig. 3: Feedback loop
Contactors connected to the SR105E
or the basic devices are monitored via
the feedback loop of the basic device.
K
A
and K
B
are the positively driven
contacts of the connected contactor or
expansion module.
Fig. 2: Connection of several SR105E units to basic
device
If further SR105E units are to be integrated into the system,
terminals S11 must be connected in parallel on all SR105E units.
This also applies to terminals S10 and terminals S15/S16.
Fig. 1: Connection of SR105E to basic device
Wiring of the SR105E via only 4 lines:
A safety contact of the basic devices (e.g. 13-14) activates the
relays of the SR105E (S11 and S15/S16).
Two lines on S23 and S24 are required for feedback/fault moni-
toring. A fault in the SR105E thereby prevents the entire safety
chain from restarting.
Earth faults in the control lines are detected in addition to inter-
nal faults.
Wiring
Feedback Loop
SR105E
User Information for SR105E
Notice:
In order to activate earth fault monitoring, S10 must be con-
nected to PE (protective earth) on the AC115/230V devices.
With AC/DC 24 V, connect PE only to the power supply unit
according to EN60204-1.
Fig. 4: Feedback Loop with Auto-Start
Contactors connected to the SR105E or the
basic devices are monitored via the feedback
loop of the basic device. K
A
and K
B
are the
positively driven contacts of the connected
contactor or expansion module.
Power supply
and
Safety contacts
Fig. 5:
Power supply A1 and A2.
(Power supply according to techn.
Data )
Fig. 6:
Connecting load to safety contacts.
(Figure shows example.
Voltage „+V“ according to techn.
Data)
S12
